Figura 1 :
400dm = 40m
Aria=b•h/2
Aria=40•30/2
Aria= 600 m2
Figura 2 :
3000cm = 30m
Aria= l la puterea a 2
Aria = 30 la puterea a 2
Aria = 900 m2
Figura 3 :
200dm = 20m
5dam = 50m
Aria = L•l
Aria = 50 •20
Aria = 1000 m2
Figura 4 :
300dm = 30m
5000cm = 50m
Aria = (b+B) • h /2
Aria = (30+ 50 ) •20 /2
Aria = 800 m2
Figura 5 :
200dm = 20m
Raza cercului = diametrul/2
Raza cercului = 10m
Aria = π R²
Aria = 100 π m2
